Turkey's central bank cut interest rates to 8.75% on Wednesday, risking further lira weakness, in a bigger-than-expected move aimed at limiting the economic damage of the coronavirus crisis.

While the central bank acknowledged the depreciating currency, which has tumbled 15% this year, it stressed the need to keep credit flowing and to respond to sliding oil prices as it once again cut interest rates by 100 basis points.

Marking its eighth straight rate cut, Turkey's central bank lowered its benchmark one-week repo rate from 9.75%, extending an aggressive easing cycle that has seen it fall 1,525 basis points in less than a year, beyond most analyst forecasts.

The median expectation was for a cut of 50 basis points in a Reuters poll of 18 economists, with predictions ranging between no change and a 100 basis point cut.

The rate cut showed that the bank's "overriding objective is to support economic growth and it is willing to make sacrifices on the Turkish lira, as well as on financial stability and price stability considerations," said Phoenix Kalen, director of emerging market strategy at Societe Generale.

The lira hit its weakest level since August 2018 - at the peak of Turkey's currency crisis - touching 6.999 to the dollar, or around 0.25% weaker on the day.

While a weaker lira lifts inflation in import-dependent Turkey, the currency has outperformed most emerging markets this year.

Turkey, the largest economy in the Middle East, is tilting into its second recession in less than two years after a surge in cases of the coronavirus.

Ankara has moved to curb its spread by closing schools, bars and cafes, as well as shutting borders and limiting domestic travel.

The bank's policy committee said in a statement that fallout from the coronavirus outbreak has started to hit trade, tourism and domestic demand so it was "crucial" to ensure markets are functioning and credit is flowing.

Falling global energy prices are lowering inflation expectations in Turkey, which is almost completely dependent on imports to meet its energy needs, it added.

Oil prices have tumbled to near two-decade lows due to the economic fallout from the coronavirus pandemic.

The bank added that inflation would probably fall short of its year-end forecast of 8.2%, hinting at a revision in next week's prices report.

The aggressive easing began in July, when President Tayyip Erdogan fired the bank's former governor for not following instructions, stoking concerns about monetary independence.

The Reuters poll showed the policy rate was expected to fall to 8.25% by year end, with forecasts ranging between 9.75% and 7.75%.

The central bank, which also cut rates by 100 points last month, has ramped up a bond-buying program to stimulate the economy, including nearly 27 billion lira ($3.64 billion) of government debt - most of it from Turkey's unemployment insurance fund - since the end of March.